import { Map } from 'immutable'

import * as actionTypes from './constants'

const defaultState =Map({
  topBanners:[],
  hotRecommends:[],
  newAlbums:[],
  
  upRanking: {},
  newRanking: {},
  originRanking: {},
})

function reducer(state = defaultState, action){
  switch(action.type){
    case actionTypes.CHANGE_TOP_BANNERS:
      return state.set("topBanners", action.topBanners)
    case actionTypes.CHANGE_HOT_RECOMMEND:
      return state.set("hotRecommends", action.hotRecommends) 
    case actionTypes.CHANGE_NEW_ALBUMS:
      return state.set("newAlbums",action.newAlbums) 
    // 排行榜三列对应的action
    case actionTypes.CHANGE_UP_RANKING:
      return state.set("upRanking", action.upRanking);
    case actionTypes.CHANGE_NEW_RANKING:
      return state.set("newRanking", action.newRanking);
    case actionTypes.CHANGE_ORIGIN_RANKING:
      return state.set("originRanking", action.originRanking);
    default:
      return state
  }
}

export default reducer